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There will be a great of Heterogeneous networks in Next Generation Network. Mobile Satellite system (MSS), great supplement of terrestrial network, provide large scale network coverage and is able to support IP multimedia services. We propose a SIP-based soft handoff scheme for integrated architecture of MSS and UMTS, as well as add satellite access gateway (SAG) in satellite station and terrestrial...
Image registration is an indispensable process in the detection of brain structural and anatomical abnormities. Inverse-consistency, topology preserving and real time application are essential to provide accurate deformation fields for statistical analysis of brain variability. Unfortunately, the previous algorithms lacked of these features. We present a registration method by adapting the optimization...
Accurate segmentation of lung texture tree is an essential step for diagnosing pulmonary diseases, including pulmonary emboli and nodules detection, which provides powerful information for research of automatic computer-aided diagnostic (CAD) systems. It still remains a challenging problem because of partial volume effects, high density airway walls and no difference on CT values between arteries...
In order to improve the accuracy of lung registration, a new hybrid non-rigid approach is proposed to deform the intra-subject lung images with the assistance of the anatomical landmark information. Firstly, the two volumes, respectively for expiration and inspiration breath-hold lung, are segmented to extract the airways which have tree-like topology. Secondly, the two extracted airways are skeletonized...
In this paper, we present a method that detects intracranial space-occupying lesions in two-dimensional (2D) brain high-resolution CT images. Use of statistical texture atlas technique localizes anatomy variation in the gray level distribution of brain images, and in turn, identifies the regions with lesions. The statistical texture atlas involves 147 HRCT slices of normal individuals and its construction...
In diagnosing pulmonary diseases aided by computer, accurate segmentation of the airway tree from the CT images is the basis for subsequent processing and analyzing. It is still a challenging task due to the image noise, partial volume effect and texture similarity of the airway and parenchyma. In order to solve these problems, various algorithms have been proposed, among which the region growing...
In this paper a general reliability evaluation algorithm for complex medium voltage distribution networks (MVDN) is proposed, in which each feeder is a basic unit and without simplifying the network equivalent, the depth-first search algorithm and breadth-first search algorithm is used to search each feeder in topologies. Then circuit breakers oriented first-class zone based on the same influences...
Natural eco-environment of Yellow River valley is a rather complicated complex. It is a problem worthy of study on how to carry out comprehensive quantitative analysis. This article comprehensively chooses nine natural environment indexes, including vegetation index, land utilization ratio, soil erosion intensity, accumulated temperature over o, accumulated temperature over 10, annual average temperature,...
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